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% Copyright (C) 1997 Aladdin Enterprises. All rights reserved.
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%
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% This software is provided AS-IS with no warranty, either express or
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% implied.
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%
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% This software is distributed under license and may not be copied,
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% modified or distributed except as expressly authorized under the terms
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% of the license contained in the file LICENSE in this distribution.
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%
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% For more information about licensing, please refer to
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% http://www.ghostscript.com/licensing/. For information on
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% commercial licensing, go to http://www.artifex.com/licensing/ or
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% contact Artifex Software, Inc., 101 Lucas Valley Road #110,
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% San Rafael, CA 94903, U.S.A., +1(415)492-9861.
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% $Id: gs_typ32.ps,v 1.6 2002/06/02 12:03:28 mpsuzuki Exp $
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% Initialization file for Type 32 fonts.
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% ------ Type 32 fonts ------ %
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% We need LanguageLevel 2 or higher in order to have defineresource.
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languagelevel dup 2 .max .setlanguagelevel
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/BitmapFontInit mark
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/.makeglyph32 systemdict /.makeglyph32 get
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systemdict /.makeglyph32 .undef
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/addglyph { % ([wx wy llx lly urx ury] |
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% [w0x w0y llx lly urx ury w1x w1y vx vy])
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% <bitmap> <cid> <type32font> addglyph -
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1 index dup 2 index .removeglyphs
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22 string .makeglyph32
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% Stack: metrics bitmap cid font metstr
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3 index () ne {
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% Use G4 encoding to compress the bitmap.
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% Define a string large enough to hold the metrics,
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% an uncompressed bitmap (worst case = 5x expansion),
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% and the 2 RTC codes (3 bytes).
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dup length 4 index length 5 mul add 10 add string
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% Stack: metrics bitmap cid font metstr buffer
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dup 0 3 index putinterval
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dup 2 index length 1 index length 1 index sub getinterval
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% Stack: metrics bitmap cid font metstr buffer bitbuf
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mark /Columns 8 index dup 4 get exch 2 get sub
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/Rows 10 index dup 5 get exch 3 get sub
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/K -1 /EndOfBlock true /BlackIs1 true
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.dicttomark /CCITTFaxEncode filter
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% Stack: metrics bitmap cid font metstr buffer filter
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dup 6 index writestring closefile
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% Find the end of the data by scanning backwards for the RTC.
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% There are 2 RTCs x 12 bits = 3 bytes to remove.
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{
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dup dup length 1 sub get 0 ne { exit } if
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} loop
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exch pop % metstr
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} if
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1 index /CharStrings get 3 index 3 -1 roll put
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pop pop pop pop
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} obind
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/removeall { % <type32font> removeall -
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} obind
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/.removeglyphs systemdict /.removeglyphs get
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systemdict /.removeglyphs .undef
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/removeglyphs { % <cid_min> <cid_max> <type32font> .removeglyphs -
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3 copy .removeglyphs
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dup /CharStrings get dup {
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% Stack: cidmin cidmax font CharStrings cid bitmap
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pop dup 5 index ge { dup 4 index le { 2 copy undef } if } if pop
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} forall pop pop pop pop
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} obind
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.dicttomark /ProcSet defineresource pop
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/.cidfonttypes where { pop } { /.cidfonttypes 6 dict def } ifelse
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.cidfonttypes begin
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4 % CIDFontType 4 = FontType 32
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{ dup /FontType 32 put
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dup /CharStrings 20 dict put
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1 index exch .buildfont32 exch pop
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} bind def
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end % .cidfonttypes
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% Define the BuildGlyph procedure.
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% Since Type 32 fonts are indexed by CID, there is no BuildChar procedure.
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% The name %Type32BuildGlyph is known to the interpreter.
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(%Type32BuildGlyph) cvn { % <font> <cid> %Type32BuildGlyph -
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1 index /CharStrings get
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% Stack: font cid CharStrings
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dup 2 index .knownget
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{ exch pop } { 0 get } ifelse
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% Stack: font cid cstr
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dup //.getmetrics32 % use // because of .undef below
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dup 14 gt {
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8 index 8 index 13 3 roll setcachedevice2
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} {
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4 index 4 index 9 3 roll setcachedevice
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} ifelse
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% Stack: font cid cstr w h nmetrics llx lly
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6 -1 roll 4 -1 roll 1 index length 1 index sub getinterval
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% Stack: font cid w h llx lly bitstr
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dup () eq {
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pop pop pop
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} {
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mark /Columns 6 index /Rows 7 index /K -1 /EndOfBlock false /BlackIs1 true
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.dicttomark /CCITTFaxDecode filter 4 index 4 index true
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% Stack: font cid w h llx lly filter w h true
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[ 1 0 0 1 11 -2 roll exch neg exch neg ] 5 -1 roll imagemask
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} ifelse
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pop pop pop pop
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} bind def
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systemdict /.getmetrics32 .undef
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buildfontdict 32 /.buildfont32 cvx put
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32 dup /FontType defineresource pop
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.setlanguagelevel
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